A study conducted by Dun & Brandstreet concluded that people who shop using a credit card spend at least 12-18% more than people who shop using cash. This is likely due to two reasons. First, using your card to pay for your purchases does not feel as financially burdening as using cash. You don’t see your bank account dwindling down, only a credit card bill getting higher which you’ll only see by the end of the month.
Secondly, paying for big ticket items in installments using your card drives up the original price of the item. This is because merchants and credit card companies have to make up for the risk of people who might default their credit card dues, hence, the added costs. If you can, purchase items using cash or your debit card for better control on your financials.